Optical Mask Reflective Layer Decoupling for Scintillator Signal Magnitude
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Solution Overview
Problem
Current medical radiation imaging detectors face challenges in optimizing reflective optical performance without compromising mechanical properties and thermal conductivity, as the reflective 'seat' element is often chosen for poor reflective materials, affecting signal magnitude and event positioning.
Innovation Solution
An optical mask with a light guide layer and a reflective layer affixed to it, using a rigid structural material with high reflectivity, is positioned independently of the 'seat' structure, allowing for improved thermal conduction and mechanical properties while maintaining optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reflective seat element is constructed with materials prioritizing mechanical properties and thermal conductivity, then mechanical strength and thermal management are improved, but optical reflectivity deteriorates
Solution Approach 1:
The invention separates the reflective optical mask from the mechanical seat structure into two independent components. The seat structure focuses on mechanical support and thermal conduction, while the optical mask layer (with ≥90% reflectivity) is applied as a separate functional coating on the light guide, allowing each component to be optimized for its specific function without compromise
Solution Approach 2:
The reflective optical function is extracted from the seat structure and transferred to an independent optical mask layer. This extraction allows the seat to be constructed from materials optimized purely for mechanical strength and thermal conductivity, while the optical mask layer provides the required ≥90% reflectivity for wavelengths between 300-800 nm
2Temperature
If the reflective seat element is constructed with materials prioritizing thermal conductivity, then thermal management is improved, but optical reflectivity deteriorates
Solution Approach 1:
The invention divides the thermal management function and optical reflection function into separate components. The seat structure handles thermal conduction to silicon-based sensors, while the optical mask layer handles photon reflection, eliminating the trade-off between thermal conductivity and optical reflectivity
Solution Approach 2:
The optical reflection property is extracted from the thermal management structure and assigned to a separate optical mask layer with ≥90% reflectivity. This allows the seat to be made from materials with high thermal conductivity without compromising optical performance
3Device complexity
If the reflective mask is integrated into the seat structure, then device complexity is reduced, but optical performance deteriorates
Solution Approach 1:
The invention merges the optical mask layer with the light guide structure, forming an integrated optical assembly that is then mounted on the seat. This combination maintains structural simplicity while achieving ≥90% reflectivity, as the optical functions are integrated rather than separate discrete components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances signal magnitude and event positioning by decoupling the reflective mask from the 'seat' structure, enabling better thermal management and mechanical support without sacrificing optical performance, leading to improved detector efficiency.
Implementation Method 1
the light guide layer can have a reflective layer affixed to a surface of the light guide layer... The reflective layer can have greater than or equal to 90% reflectivity for wavelengths between 300 and 800 nm
Implementation Method 2
A scintillator is a material, which exhibits the property of luminescence when excited by ionizing radiation. Luminescent materials, when struck by an incoming particle, absorb its energy and scintillate, i.e. reemit the absorbed energy in the form of light.
Implementation Method 3
The light energy produced by the scintillator can be used to produce one or more electrical signals by an electronic light sensor such as a photomultiplier tube (PMT) or a photodiode
Data Source
AI summary
An optical mask positioned on a scintillator array. The optical mask includes a reflective layer. One or more windows can be positioned on the surface of optical mask.